natural selection


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natural selection

n.
The process in nature by which, according to Darwin's theory of evolution, organisms that are better adapted to their environment tend to survive longer and transmit more of their genetic characteristics to succeeding generations than do those that are less well adapted.

natural selection

n
(Biology) a process resulting in the survival of those individuals from a population of animals or plants that are best adapted to the prevailing environmental conditions. The survivors tend to produce more offspring than those less well adapted, so that the characteristics of the population change over time, thus accounting for the process of evolution

nat′ural selec′tion


n.
the process in nature by which forms of life having traits that better enable them to adapt to specific environmental pressures, as changes in climate or competition for food or mates, will tend to survive and reproduce in greater numbers than others of their kind, thus perpetuating those traits in succeeding generations.
[1855–1860]

natural selection

The principle that only organisms best suited to their environment survive long enough to pass on their genetic characteristics to their offspring. According to this principle, the proportion of the species having these characteristics increases with each generation. Natural selection results from random variation of genetic traits in a species and forms the basis of the process of evolution. See Notes at adaptation, evolution.

natural selection

The process that favors the survival and reproduction of organisms that are best adapted to their environment.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.natural selection - a natural process resulting in the evolution of organisms best adapted to the environment
natural action, natural process, action, activity - a process existing in or produced by nature (rather than by the intent of human beings); "the action of natural forces"; "volcanic activity"
Translations
References in classic literature ?
This fundamental subject of Natural Selection will be treated at some length in the fourth chapter; and we shall then see how Natural Selection almost inevitably causes much Extinction of the less improved forms of life and induces what I have called Divergence of Character.
Furthermore, I am convinced that Natural Selection has been the main but not exclusive means of modification.
Now by the action of natural selection, all terrestrial plants have acquired a resisting power against bacterial diseases--they never succumb without a severe struggle, but the red weed rotted like a thing already dead.
And that's not all--twenty years ago he would have found in that literature traces of conflict with authorities, with the creeds of the ages; he would have perceived from this conflict that there was something else; but now he comes at once upon a literature in which the old creeds do not even furnish matter for discussion, but it is stated baldly that there is nothing else--evolution, natural selection, struggle for existence--and that's all.
Their mating is a matter of community interest solely, and is directed without reference to natural selection. The council of chieftains of each community control the matter as surely as the owner of a Kentucky racing stud directs the scientific breeding of his stock for the improvement of the whole.
From these and their degraded slaves and a later intermixture of the blood of the anthropoids sprung the gnarled men of Opar; but by some queer freak of fate, aided by natural selection, the old Atlantean strain had remained pure and undegraded in the females descended from a single princess of the royal house of Atlantis who had been in Opar at the time of the great catastrophe.
According to Darwin, these variations were caused by natural selection. This refers to the preservation of functional advantages over successive generations that enable a species to better compete in their respective environments.
Natural selection is a process that drives the evolution of species that is best suited for their environment.
The initial Zen Self Care Natural Selection is limited to 20 brands: Zen Self Care screened hundreds and limited its selection to personal care products and treatments that base their effectiveness on herbal, botanical, non-chemical, holistic active ingredients:
Indeed evolution by natural selection is a promising case for a counterfactual study because it is a famous case of "simultaneous discovery." Alfred Russel Wallace came up with something similar in a malarial fever dream, impelling Darwin to publish sooner than he would have liked.
Michael examines Charles Darwin's theory of natural selection, what the theory says, what it aims to explain, and how it manages to explain.